xattr file.jpg
xattr -l file.jpg
ls -al@
ls -al@ *.jpg
ls -l@ file.jpg
-rw-r--r--@ 1 who staff
com.apple.macl 72
com.apple.quarantine 29
com.apple.lastuseddate#PS 16
com.apple.metadata:kMDItemWhereFroms 137
delete key
# Pick a Key to delete
xattr -d com.apple.metadata:kMDItemWhereFroms file.jpg
# REMOVE ALL keys for a particular file
xattr -c
com.apple.quarantine
xattr -rd com.apple.quarantine file.dmg
Refs: